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Microring resonator-based diamond optothermal switch: a building block for a quantum computing network

Huang, Zhihong and Faraon, Andrei and Santori, Charles and Acosta, Victor and Beausoleil, Raymond G. (2013) Microring resonator-based diamond optothermal switch: a building block for a quantum computing network. In: Advances in Photonics of Quantum Computing, Memory, and Communication VI. Proceedings of SPIE. No.8635. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 86350E. ISBN 9780819494047. https://resolver.caltech.edu/CaltechAUTHORS:20180628-145433531

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Abstract

The negatively-charged nitrogen-vacancy centers in diamond has motivated many groups building scalable quantum information processors based on diamond photonics. This is owning to the long-lived electronic spin coherence and the capability for spin manipulation and readout of NV centers. The primitive operation is to create entanglement between two NV centers, based on schemes such as 'atom-photon entanglement' proposed by Cabrillo et al. To scale this type of scheme beyond two qubits, one important component is an optical switch that allows light emitted from a particular device to be routed to multiple locations. With such a switch, one has choices of routing photons to specified paths and has the benefit of improving the entanglement speed by entangling multiple qubits at the same time. Yield of the existing diamond cavities coupled with NV centers are inevitably low, due to the nature of randomness for NV placement and orientation, variation of spectral stability, and variation of cavity resonance frequency and quality factor. An optical switch provides the capability to tolerate a large fraction of defective devices by routing only to the working devices. Many type of switching devices were built on conventional semiconductor materials with mechanisms from mechanical, thermal switching to carrier injection, photonics crystal, and polymer refractive index tuning . In this paper, we build an optical-thermal switch on diamond with micro-ring waveguides, mainly for the simplicity of the diamond fabrication. The the switching function was realized by locally tuning the temperature of the diamond waveguides. Switching efficiency of 31% at 'drop' port and 73% at 'through' port were obtained.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.2002631DOIArticle
ORCID:
AuthorORCID
Faraon, Andrei0000-0002-8141-391X
Additional Information:© 2013 Society of Photo-Optical Instrumentation Engineers (SPIE). This manuscript is based on work supported by the Defense Advanced Research Projects Agency (award no. HR0011-09-1-0006) and The Regents of the University of California.
Funders:
Funding AgencyGrant Number
Defense Advanced Research Projects Agency (DARPA)HR0011-09-1-0006
Regents of the University of CaliforniaUNSPECIFIED
Subject Keywords:Diamond, optical switch, quantum information processing, nitrogen-vacency centers
Series Name:Proceedings of SPIE
Issue or Number:8635
Record Number:CaltechAUTHORS:20180628-145433531
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180628-145433531
Official Citation:Zhihong Huang, Andrei Faraon, Charles Santori, Victor Acosta, Raymond G. Beausoleil, "Microring resonator-based diamond optothermal switch: a building block for a quantum computing network", Proc. SPIE 8635, Advances in Photonics of Quantum Computing, Memory, and Communication VI, 86350E (29 March 2013); doi: 10.1117/12.2002631; https://doi.org/10.1117/12.2002631
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:87447
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:29 Jun 2018 15:48
Last Modified:03 Oct 2019 19:56

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